Nusinersen sodium is an antisense oligonucleotide agent that modifies pre–messenger RNA splicing of the SMN2 gene and thus promotes increased production of full-length SMN protein.
References:
[1]. Richard S Finkel, et al. Nusinersen versus Sham Control in Infantile-Onset Spinal Muscular Atrophy. N Engl J Med. 2017 Nov 2;377(18):1723-1732.
[2]. Laura Torres-Benito, et al. NCALD Antisense Oligonucleotide Therapy in Addition to Nusinersen further Ameliorates Spinal Muscular Atrophy in Mice. Am J Hum Genet. 2019 Jul 3;105(1):221-230.